CompTIA Updated DS0-001 Exam Questions and Answers by danyal

The correct answer is A. UPDATE. CompTIA DataSys+ classifies the UPDATE command as a Data Manipulation Language (DML) statement used to modify existing data within a table. When data is imported incorrectly—such as having wrong values, missing fields, or improperly formatted entries—the appropriate corrective action is to update the affected records rather than removing data structures or deleting records outright.

The UPDATE command allows a database administrator to correct specific columns or rows by setting them to the proper values while preserving the rest of the dataset. This aligns with DataSys+ best practices, which emphasize data integrity, minimal disruption, and precision when fixing data-related issues. By using a WHERE clause, the administrator can target only the incorrect records, reducing risk and avoiding unnecessary data loss.

Option B, DROP TABLE, is a DDL command that completely removes a table and all its data and structure. This is an extreme action and would not be appropriate when only certain data values are incorrect. Option C, DELETE, removes rows from a table, which may result in loss of valid data rather than correcting it. Deletion is only appropriate when data should no longer exist, not when it needs correction. Option D, ALTER TABLE, is also a DDL command used to modify table structure (such as adding or changing columns), not to fix incorrect row-level data.

CompTIA DataSys+ stresses the importance of choosing the least destructive and most targeted command when resolving data issues. Correcting imported data typically involves adjusting values rather than altering schema or removing data entirely.

Therefore, to fix incorrectly captured imported data while maintaining database integrity and availability, the administrator should use the UPDATE command, making option A the correct and fully verified answer.

A result of an on-path attack on a system is a Wi-Fi network that redirects to clones of legitimate websites. An on-path attack is a type of attack that intercepts and modifies the traffic between two parties without their knowledge or consent. An attacker can use an on-path attack to create a rogue Wi-Fi network that mimics a legitimate one, and then redirect the users to fake websites that look like the ones they intended to visit. The attacker can then steal the users’ personal or financial information, such as usernames, passwords, credit card numbers, or bank account details. The other options are either results of different types of attacks or not related to attacks at all. For example, a website that has crashed and is no longer accessible may be a result of a denial-of-service attack, an email from an unknown source requesting bank account details may be a result of a phishing attack, and a web application that returns the addresses of its customers may be a result of a poor design or a data breach. References: CompTIA DataSys+ Course Outline, Domain 4.0 Data and Database Security, Objective 4.4 Given a scenario, identify common types of attacks against databases.

A reason to create a stored procedure is to improve performance. A stored procedure is a set of SQL statements or commands that are stored and compiled in the database server, and can be executed by name or by a trigger. A stored procedure can improve performance by reducing the network traffic between the client and the server, as only the name or the parameters of the stored procedure need to be sent, rather than the entire SQL code. A stored procedure can also improve performance by reusing the same execution plan, as the stored procedure is compiled only once and cached in the server memory. The other options are either not true or not relevant for this purpose. For example, a stored procedure does not necessarily minimize storage space, as it still occupies space in the database server; a stored procedure does not bypass case sensitivity requirements, as it still follows the rules of the database system; a stored procedure does not give control of the query logic to the user, as it is defined and maintained by the database administrator or developer. References: CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.2 Given a scenario, create database objects using scripting and programming languages.

The correct answer is D. The continuity of operations policy. CompTIA DataSys+ emphasizes that when an unexpected system failure occurs—especially during critical activities such as database migrations—the primary concern is restoring services, minimizing downtime, and ensuring data availability. The continuity of operations policy (often aligned with business continuity and disaster recovery planning) provides documented guidance on how to respond to system outages and operational disruptions.

A continuity of operations policy outlines procedures, roles, and responsibilities for maintaining or rapidly restoring essential systems after an incident. This includes steps for failover, rollback procedures, recovery prioritization, communication protocols, and escalation paths. During a migration-related crash, administrators rely on this policy to determine whether to restore from backups, revert to a previous database version, activate standby systems, or follow defined recovery time objectives (RTOs) and recovery point objectives (RPOs). DataSys+ highlights these policies as critical for ensuring predictable and coordinated responses during system failures.

Option A, the data retention policy, focuses on how long data must be stored and when it can be archived or deleted. It does not provide operational guidance for handling system crashes. Option B, the access control policy, governs authentication and authorization rules and is unrelated to recovery actions. Option C, the database compliance policy, addresses regulatory and audit requirements but does not define technical recovery procedures during an outage.

CompTIA DataSys+ clearly distinguishes governance and security policies from operational resilience policies. When a database crashes during a migration, the administrator’s priority is service restoration and data integrity, both of which are addressed by continuity of operations planning.

Therefore, the systems administrator should refer to the continuity of operations policy, making option D the correct and fully verified answer.